# US 12,213,415 B2 · Methods and systems for irrigating a cannabis plant > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,213,415 B2 - Document ID: US12213415B2 - Status: Granted - Kind: B2 - Application number: 18/274,053 - Filed: 2022-01-27 - Published: 2024-07-18 - Granted: 2025-02-04 - Earliest claimed: 2021-01-29 - Assignees: Signify Holding B.V. - Applicants: Signify Holding B.V. - Inventors: Céline Catherine Sarah Nicole; Esther De Beer - Web page: https://patentgrep.com/patent/US12213415B2 ## CPC - A01G 22/00: Cultivation of specific crops or plants not otherwise provided for - A01G 25/165: {Cyclic operations, timing systems, timing valves, impulse operations} - A01G 22/15: Leaf crops, e.g. lettuce or spinach - A01G 25/16: Control of watering - A01G: HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING (picking of fruits, vegetables, hops or the like A01D46/00; propagating unicellular algae C12N1/12) ## Abstract A method for irrigating a Cannabis plant is disclosed. The method comprises, before a pruning of the Cannabis plant, providing water to the Cannabis plant at a first rate. The method comprises, performing said pruning of the Cannabis plant. The method comprises, before said pruning, in a time window that extends from one hour before said pruning to one hour after said pruning, changing the rate of water provisioning to the Cannabis plant from the first rate to a second rate, the second rate being lower than the first rate. The method further comprises, after said pruning of the Cannabis plant, providing water to the Cannabis plant at the second rate for at least 15 minutes. ## Claims ### Claim 1 A method for irrigating a Cannabis plant, the method comprising sequentially performing the steps of providing, before a pruning of the Cannabis plant, water to the Cannabis plant at a first rate, and changing, in a time window that extends from one hour before said pruning to one hour after said pruning, the rate of water provisioning to the Cannabis plant from the first rate to a second rate, the second rate being lower than the first rate, and providing, after said pruning of the Cannabis plant, water to the Cannabis plant at the second rate for at least 15 minutes. ### Claim 2 (depends on 1) The method according to claim 1, comprising changing the rate of water provisioning from the first rate to the second rate in a time window that extends from 15 minutes before said pruning to 15 minutes after said pruning. ### Claim 3 (depends on 1) The method of claim 1, further comprising the step of pruning the Cannabis plant. ### Claim 4 (depends on 1) The method according to claim 1, further comprising determining an amount of pruned material of the Cannabis plant that is pruned during said pruning and/or determining an amount of remaining material of the Cannabis plant that is not pruned during said pruning, and based on the determined amount of pruned material and/or of remaining material, determining the second rate. ### Claim 5 (depends on 4) The method according to claim 4, further comprising obtaining one or more images representing the Cannabis plant before and/or during and/or after said pruning, and based on said one or more images, determining the amount of pruned material and/or of remaining material. ### Claim 6 (depends on 4) The method according to claim 4, wherein determining the amount of remaining material comprises determining a number of leaves that are still on the Cannabis plant after said pruning. ### Claim 7 (depends on 4) The method according to claim 4, further comprising based on the amount of pruned material and/or remaining material, determining a transpiration capacity of the Cannabis plant, said transpiration capacity indicating a maximum amount of water per unit of time that can evaporate from the Cannabis plant after the pruning, and based on the determined transpiration capacity, determining the second rate of water provisioning. ### Claim 8 (depends on 1) The method according to claim 1, wherein determining the amount of pruned material comprises weighing the amount of pruned material. ### Claim 9 (depends on 1) The method according to claim 1, further comprising after providing water to the Cannabis plant at the second rate for at least 15 minutes, increasing the rate of water provisioning to the Cannabis plant. ### Claim 10 (depends on 9) The method according to claim 9, wherein increasing the rate of water provisioning to the Cannabis plant comprises increasing the rate of water provisioning to a third rate that is equal to or higher than said first rate. ### Claim 11 (depends on 1) The method according to claim 1, wherein a difference between the first rate and second rate is at least 100 milliliters per day. ### Claim 12 (depends on 1) The method according to claim 1, comprising determining the second rate of water provisioning based on at least one of: a radiant power of light provided to the Cannabis plant, an ambient temperature at the Cannabis plant, and a relative humidity of air at the Cannabis plant. ### Claim 13 An irrigation system for irrigating a Cannabis plant, the system comprising: a water provisioning system that is configured to provide water at a controllable rate to the Cannabis plant, and a control system that is configured to: determine when a pruning of the Cannabis plant is performed, and control the water provisioning system to sequentially provide, before said pruning of the Cannabis plant, water to the Cannabis plant at a first rate, and to change, in a time window that extends from one hour before said pruning to one hour after said pruning, the rate of water provisioning to the Cannabis plant from the first rate to a second rate, the second rate being lower than the first rate, and to provide, after said pruning of the Cannabis plant, water to the Cannabis plant at the second rate for at least 15 minutes. ### Claim 14 A computer-implemented method for controlling an irrigation system for irrigating a Cannabis plant, wherein the irrigation system comprises a water provisioning system that is configured to provide water at a controllable rate to the Cannabis plant, the computer-implemented method comprising: determining when a pruning of the Cannabis plant is performed, and controlling the water provisioning system to sequentially: provide, before a pruning of the Cannabis plant, water to the Cannabis plant at a first rate, and change, in a time window that extends from one hour before said pruning to one hour after said pruning, the rate of water provisioning to the Cannabis plant from the first rate to a second rate, the second rate being lower than the first rate, and provide, after said pruning of the Cannabis plant, water to the Cannabis plant at the second rate for at least 15 minutes. ### Claim 15 (depends on 1) A non-transitory computer readable medium comprising instructions which, when the instructions are executed by a control system of a irrigation system, cause the control system to perform the method according to claim 1.